New Plymouth marine weather forecast
New Plymouth (NZNPL) is a port in New Zealand at 39°3.0′S 174°1.0′E. Today (Sep 16): NNW wind 16–23 kn, waves 1.5–2.7 m, from the ECMWF IFS run 2026-09-16 00z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 39°3.0′S 174°1.0′E |
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| UN/LOCODE | NZNPL |
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| Harbor size | Small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 9 m |
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| Anchorage depth | 23 m |
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| Tide range | 10 m |
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| Pilotage | Compulsory |
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| Time zone | Pacific/Auckland |
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Facilities & services (NGA World Port Index)| Tugs | Assistance and salvage available |
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| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Major (hull, machinery, electrical) |
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| Medical facilities | Available |
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10-day marine forecast — New Plymouth
| Date | Wind | Gusts | Waves |
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| NNW 16–23 kn | 29 kn | 1.5–2.7 m |
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| SW 11–21 kn | 30 kn | 2.9–3.8 m |
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| SW 24–27 kn | 35 kn | 3.7–4.1 m |
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| W 25–33 kn | 48 kn | 3.9–5.6 m |
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| SW 22–31 kn | 38 kn | 4.7–6.1 m |
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| W 17–26 kn | 32 kn | 3.0–4.3 m |
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| WSW 22–22 kn | 28 kn | 3.3–3.3 m |
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| SW 22–22 kn | 30 kn | 4.2–4.2 m |
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| SSE 5–5 kn | 19 kn | 3.6–3.6 m |
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| WSW 21–21 kn | 27 kn | 2.6–2.6 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 33 kn on Sep 19. The highest modeled significant wave height is 6.1 m on Sep 20. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at New Plymouth right now?
As of the ECMWF IFS run 2026-09-16 00z: NNW wind 16–23 kn, waves 1.5–2.7 m. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at New Plymouth?
New Plymouth is classed as a small harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to New Plymouth?
Per the NGA World Port Index, the entrance channel carries about 9 m and anchorage depths run about 23 m. Verify against current official charts before entry.
What restricts entry to New Plymouth?
Entry is affected by heavy swell, overhead clearance limits. Check the live forecast on this page and official notices before approach.